18k gold fill jewellery is not the same as plated jewellery, it indicates a thick layer of 18k solid gold pressure bonded over copper. Rather, plated jewellery only includes a very thin layer of gold electroplated over a base metal, which can wear/rub off over time. Gold fill has more longevity than plated jewellery, & when cared for correctly will be part of your jewellery collection for many years to come. This piece does not contain nickel.